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Paleoclimatic implications of the hydrogen isotopic composition of terrigenous n-alkanes from Lake Yamzho, southern Tibetan Plateau

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Mügler,  I.
Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Gleixner,  G.
Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Zitation

Xia, Z. H., Xu, B. Q., Mügler, I., Wu, G. J., Gleixner, G., Sachse, D., et al. (2009). Paleoclimatic implications of the hydrogen isotopic composition of terrigenous n-alkanes from Lake Yamzho, southern Tibetan Plateau. Geochemical Journal, 43(4), 275-286.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000E-D940-6
Zusammenfassung
The hydrogen isotopic composition (delta D) of leaf water used for biosynthesis of n-alkanes can be modified by climate. Therefore, the delta D call be considered Lis potential paleoclimatic proxy to explore. We compared measured delta D Values of alkalies (n-C-25 to n-C-31) extracted front a short sediment profile spanning the past 50 years with a 7-year resolution from Lake Yamzho, Southern Tibetan Plateau. Climatic control was reconstructed using meteorological records of the nearby Langkazi and Lhasa weather stations. We found that the delta D values of the n-alkanes correlated with the mean annual air temperature and significantly correlated with the mean growing season air temperature. Oil the other hand, the delta D values show poor correlations with both rainfall amount and relative humidity. These results indicate that stable isotope composition of n-alkanes Could be ail excellent proxy for paleotemperature reconstruction. [References: 54]